Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 30, Problem 9TYU
WRITE ABOUT A THEME: ORGANIZATION Cells arc the basic units of structure and function in all organisms. A key feature in the life cycle of plants is the alternation of multicellular haploid and diploid generations. Imagine a lineage of flowering plants in which mitotic cell division did not occur between the events of meiosis and fertilization (se Figure 30.12). In a Short essay (lOO-150 words), describe how this change in the timing of cell division would affect the structure and lifecycle of plants in this lincagc.
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If plant cells had the following % of their cells in these stages of mitotic cell division and % of cells reflects how much time they spend in each stage:
Interphase=74.9%
Prophase=17.3%
Metaphase=3.3%
Anaphase=D1.8%
Telophase=D2.7%
and Animals had the following %s:
Interphase3D62.5%
Prophase-D31.5%
Metaphase=3.3%
Anaphase=D2.0%
Telophase%3D0.7%.
Which of the following can we NOT conclude?
O A. Both plants and animal cells spend most of their time in interphase, doubling all of the organelles and DNA requires a lot of time.
OB.Animal cells spend more of their time in mitosis (dividing the nucleus) than plant cells do.
O C. Plant cells spend more time in interphase and telophase than animal cells and animal cells spend more time in prophase, and anaphase than plant cells.
OD. Plant cells divide more quickly than animal cells.
Consider the similarities and differences in the cell cycles (mitosis and meiosis) of plants and animals.
Describe the Venn diagram in detail.
A diploid plant cell contains 54 chromosomes (2n=54). Describe the number arrangements of chromosomes in each of the following:
a.A leaf cell immediately following cytokinesis
b.A gametophyte cell at the conclusion of the S phase of mitosis
Chapter 30 Solutions
Campbell Biology
Ch. 30.1 - What features not present in seedless plants have...Ch. 30.1 - Prob. 2CCCh. 30.1 - WHAT IF? If a seed could not enter dormancy, how...Ch. 30.2 - Use examples from Figure 30.7 to describe how...Ch. 30.2 - Explain how the pine life cycle in Figure 30.4...Ch. 30.2 - Prob. 3CCCh. 30.3 - It is said that an oak is an acorns way of making...Ch. 30.3 - Compare and contrast a pine cone and a flower in...Ch. 30.3 - WHAT IF? Do speciation rates in closely related...Ch. 30.4 - Explain why plant diversity can be considered a...
Ch. 30.4 - Prob. 2CCCh. 30 - Describe how the parts of an ovule (integument....Ch. 30 - Although there are fewer Ihan 1,000 spedes of...Ch. 30 - Explain why Darwin called the origin of...Ch. 30 - Prob. 30.4CRCh. 30 - Where in an angiosperm would you find a...Ch. 30 - Prob. 2TYUCh. 30 - Prob. 3TYUCh. 30 - Which of thc following is not a characteristic...Ch. 30 - Gymnosperms and angiosperms liave tlie following...Ch. 30 - DRAW IT Use the letters a-d to label where on the...Ch. 30 - EVOLUTION CONNECTION The history of life has been...Ch. 30 - Prob. 8TYUCh. 30 - WRITE ABOUT A THEME: ORGANIZATION Cells arc the...Ch. 30 - Prob. 10TYU
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- VISUALIZE Sketch a roughly cuboidal cell preparing to divide. Indicate the orientation of the preprophase band and the site where the new cell walls of the daughter cells will form.arrow_forwardB. Cells are the basic units of structure and function in all organisms. A key feature in the life cycle of plants is the alternation of multicellular haploid and diploid generations. Imagine a lineage of flowering plants in which mitotic cell division did not occur between the events of meiosis and fertilization.' change in the timing of cell division would affect the structure and life cycle of plants in this lineage. , describe how thisarrow_forwardPick an organelle or cellular structure that is unique to plants. Explain why this would be necessary for plant survival AND why it isn't necessary in animal cells. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B I U S Paragraph Arial 10pt A V x X, P QUESTION 21 Double fertilization involves 2 fertilizations, write the cells/nuclei involved with each, their ploidy level (ie. n, n+n, 2n, 3n). with a ploidy level of with a ploidy level of Fertilization 1: ,with a ploidy level of with a ploidy level of with a ploidy level of Fertilization 2: with a ploidy level ofarrow_forward
- Explain the similarities and differences on how mitosis and meiosisare used in the plant and human (animal) life cyclearrow_forwardExplain the similarities and differences in how mitosis and meiosisare used in the plant and human (animal) life cycles.arrow_forwardIn accordance to mitosis and meiosis, compare and contrast the processes in plants vs in animals. Create a venn diagram.arrow_forward
- A researcher examining a root tip observes a plant cell with condensed daughter chromo- somes at each pole and a cell plate at the central plane of the cell. Which of the following best describes what will occur next in the cell? A The nuclear envelopes will break down, and the spindle fibers will begin to form. B с D Sister chromatids will align at the central plane via spindle fibers. The nuclear envelope will break down, and the spindle will begin to form. The chromosomes will decondense, and the daughter cells will enter the interphase.arrow_forwardExercise Observe the diagram below and answer the following questions: Image Source: Wikimedia Commons 18₂1)-(²) (Cr)-(1 1. Which process is represented in these diagrams? Mitosis or meiosis? Explain your answer. 2. How many chromosomes did the cell start with? 3. How many chromosomes are present at the end of division I? 4. How many chromosomes are present in each cell at the end of division II? Homologous Chromosomes 5. Explain how meiosis results in UNIQUE cells. 6. Is this cell division occurring in a plant cell or an animal cell? What is the main difference between the two divisions?arrow_forwardImagine that a cell contains a temperature-sensitive mutation such that nuclear lamins cannot be phosphorylated at the restrictive temperature. Describe the phenotype of the mutant cells during mitosis at the restrictive temperature. O The mutant cells will not be able to decondense chromosomes and will be arrested in prophase O The mutant cells will not be able to assemble the mitotic spindle and will be arrested in metaphase O The mutant cells will not be able to disassemble the nuclear envelope and will be arrested in prophase The mutant cells will go through multiple mitotic cycles without cytokinesis and will become multi-nucleated The mutant cells will be unable to reassemble the nuclear envelope and will be arrested in telophasearrow_forward
- Which one of the following statements best describes the mechanism by which the "cell cycle control system" regulates events of the cell cycle? O Hydrophobic signaling molecules cross the plasma membrane at distinct stages in the cell cycle O Ca++ and CAMP release into the nucleus signal the progression of the cell cycle Changes in vesicle trafficking events signal progression of the cell cycle Changes in the cellular cytoskeleton signal progression of the cell cycle Protein phosphorylation and dephosphorylation events signal the progression of the cell cyclearrow_forwardthe light micrograph shows dividing cells near the tip of an onion root. identify and encircle a cell in each of the following stages: phrophase , prometaphase, metaphase ,anaphase and telophase. describe the major events occuring at each stage.arrow_forward个 Following graph shows number of chromosomes (N) and amount of DNA (C) in a cell undergone different stage of cells cycle. 4C 30+ 2C C+2N 2N 2N 2N ABCDEFGH Phase Which amongst the following statements should be correct on the basis of above given information? I. C' represents the phase just before prophase. II. H represents haploid stage of cell. III. G stage of cell has double the number of chromosomes as compared to C' stage. IV. A cannot be represented as acquiescent stage.arrow_forward
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